Over a million developers have joined DZone.

SOA – There could be only one…

DZone's Guide to

SOA – There could be only one…

Free Resource

Modernize your application architectures with microservices and APIs with best practices from this free virtual summit series. Brought to you in partnership with CA Technologies.

There’s no Architecture in Business Service Orientation ! There, I’ve said it, there are no two types of SOA.  I am not trying to say that business-level service orientation doesn’t exist or isn’t valuable. However I am trying to say that labeling that SOA harms both Service Orientation at the business level and SOA (a.k.a. “technical SOA”)

For the record here are my definitions for both Business Service Orientation and Service Oriented Architecture (SOA)

Business Service Orientation is an IT  paradigm at the enterprise-level  that aims to componentize and partition the business’s software and to get composability and flexibility (and thus achieve better business and IT alignment etc.). Service Orientation can be implemented using various enterprise architecture practices (around governance, portfolio management etc)  as well as various software architectures including (but not limited to )  SOA, EDA, BPM, REST and combinations of them.

Service Oriented Architecture as an architectural style for building systems based on interacting coarse grained autonomous components called services. Each service expose processes and behavior through contracts, which are composed of messages at discoverable addresses called endpoints. Services’ behavior is governed by policies which are set externally to the service itself. SOA is derived of four predating architectural styles, namely Client/Server, Layered System, Pipes and Filters and Distributed Agents.


To reiterate -  calling Business Service Orientation SOA serves only to muddy the water and make both terms nebulous. If you just have to have a TLA just call them  BSO & SOA


I know that in “What is SOA anyway” I also refer to two SOAs. I didn’t have enough confidence to say it bluntly when I wrote that paper, but I did emphasized Service Orientation for BSO and Architecture for SOA. Also regarding a more formal definition of SOA, that shows how it is derived from the four other styles – I started explaining that quite some time ago (Intro, Client-Server, Layered, Pipes and Filters) – I still need to explain Distributed Agents and summarize (about time I’ll do that)

The Integration Zone is proudly sponsored by CA Technologies. Learn from expert microservices and API presentations at the Modernizing Application Architectures Virtual Summit Series.


Published at DZone with permission of Arnon Rotem-gal-oz, DZone MVB. See the original article here.

Opinions expressed by DZone contributors are their own.


Dev Resources & Solutions Straight to Your Inbox

Thanks for subscribing!

Awesome! Check your inbox to verify your email so you can start receiving the latest in tech news and resources.


{{ parent.title || parent.header.title}}

{{ parent.tldr }}

{{ parent.urlSource.name }}